Granted Patent
Utility
US 4,228,250 · App. 06/052,890
Blends of hydrolyzed ethylene-vinyl acetate resins having increased impact strength
Inventor:
Ervin G. Pritchett
Patented Case
View Patent ↗
Granted: Oct 14, 1980
Filed: Jun 28, 1979
Inventor
Ervin G. Pritchett
Assignee (at issue)
National Distillers and Chemical Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.